Ink cartridge



FIG. 1 is a front, bottom and right side perspective view of an ink cartridge showing our new design;

FIG. 2 is a rear, bottom and left side perspective view thereof;

FIG. 3 is a front view thereof;

FIG. 4 is a rear view thereof;

FIG. 5 is a top plan view thereof;

FIG. 6 is a bottom plan view thereof;

FIG. 7 is a right side view thereof; and,

FIG. 8 is a left side view thereof.

The broken lines shown in the drawings illustrate portion of the ink cartridge that form no part of the claimed design. 

CLAIM The ornamental design for an ink cartridge, as shown and described. 